135212441 has 16 divisors (see below), whose sum is σ = 176206464. Its totient is φ = 100687104.

The previous prime is 135212431. The next prime is 135212443. The reversal of 135212441 is 144212531.

It is a de Polignac number, because none of the positive numbers 2^k-135212441 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (135212443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42155 + ... + 45248.

It is an arithmetic number, because the mean of its divisors is an integer number (11012904).

Almost surely, 2^135212441 is an apocalyptic number.

It is an amenable number.

135212441 is a deficient number, since it is larger than the sum of its proper divisors (40994023).

135212441 is a wasteful number, since it uses less digits than its factorization.

135212441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87440.

The product of its digits is 960, while the sum is 23.

The square root of 135212441 is about 11628.0884499560. The cubic root of 135212441 is about 513.2617311255.

Adding to 135212441 its reverse (144212531), we get a palindrome (279424972).

The spelling of 135212441 in words is "one hundred thirty-five million, two hundred twelve thousand, four hundred forty-one".